How many of the following can be purified by using zone refining method?
Ni, B, Ti, In, Ge, Mn, Ag, Si, Ga

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answer is B.

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Detailed Solution

This method is based on the principle that the impurities are more soluble in the melt than in the solid state of the metal. Metals that purified from zone refining are germanium (Ge), silicon (Si), boron (B), gallium (Ga) and indium (In).

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